A New York radiologist charged by the state with negligence and fraud has been hit with new accusations that he served as a front for a medical business run by two New Jersey mobsters.

Dr. Michael Martin Katz – whose mounting legal and professional troubles were detailed by The Post in August – set up a radiology company that was controlled by two reputed Genovese crime family associates, a new lawsuit charges.

The civil racketeering suit filed last week by Allstate Insurance Co. in Morris County, N.J., claims Katz served as the “sham” owner of a Hasbrouck Heights radiology company run by two Mafiosi.

The two, identified in the suit, are:

* Stefano Mazzola, a convicted mob enforcer serving time for stabbing and beating a man who failed to pay inflated business debts.

* Peter “Petey Goggles” Mylenki, a reputed Genovese associate who was convicted for his role in a multimillion-dollar illegal gambling operation.

Allstate’s sweeping suit accuses the two hoods and others, including a chiropractor, of running medical clinics that raked in $3.3 million in fraudulent claims since 1995.

Another $6 million in claims is pending.

The suit is the latest cloud over Katz, 52, who lives in exclusive Hewlett Harbor, L.I.

Listed as the owner or shareholder of 18 medical corporations in New York, Katz has billed millions of dollars for magnetic resonance imaging (MRI), X-rays and ultrasound tests across the city and surrounding suburbs, investigators say.

“It appears he’s allowed a lot of places to use his name and some of these places are involved in some pretty shady practices,” said a New York insurance company investigator familiar with Katz.

But one of Katz’s lawyers, John Tasolides, blasted the suit as “nothing more than retaliation” for a suit a Katz firm has filed against Allstate and two other insurance companies seeking several million dollars in unpaid claims.

Tasolides denied his client has done business with the mob.

“Dr. Katz had absolutely no dealing with anybody he knew was an organized crime figure,” he said.

Katz had his license suspended in July by New York’s Board for Professional Medical Conduct and is now appealing that decision.

Officials said Katz’s license was yanked because he failed to diagnose serious ailments in some patients and found nonexistent problems in others.

He also allegedly failed to keep required records, falsified a report to cover up a misdiagnosis and lied about his credentials.

Katz has denied the charges.

In September, a New York state-appointed insurance arbitrator found that Katz, owner of Metro Medical in Brooklyn, performed “voluminous” MRIs as “a member of a conspiracy” to file claims for bogus injuries in deliberately caused accidents.

Katz has denied any wrongdoing and is appealing the ruling.

According to the Allstate suit, Katz hooked up about six years ago with Mazzola.The suit says Katz agreed to set up and serve as shareholder of a newly formed company, Heights Diagnostic Radiology, in exchange for a $50 fee for reading every $918 MRI the company performed.

All other revenues were “siphoned off” by management firms controlled by Mazzola and Mylenki, the suit contends.

In 1996, the radiology company was raided by New Jersey law-enforcement officials and Mazzola was arrested on charges of health-care fraud and extortion. The criminal charges were later dropped for lack of evidence, authorities said.

The suit says Katz then went to work for a chiropractor who allegedly “rented” the license of another doctor to run several medical clinics. Those clinics filed claims involved in 137 “staged” accidents, Allstate charges.

Katz split his payments from the chiropractor with a “broker” who had introduced them, Allstate alleged.